a
mouth and passes it out through the same way
b
mouth and passes it out through the operculum
c
operculum and passes it out through the mouth
d
operculum and passes it out through the nostrils
e
nostrils and passes it out through the operculum
Explanation
Correct Option
bNo explanation available
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Discussions (4)
MACCIFO
1 year ago
When the mouth is opened, the floor of the mouth is lowered and at the same time the two opercula are closed, water is drawn into the mouth to occupy depression created by the lowering of the floor mouth. So the correct answer should be B
